18-104-15

Flash: 3.6L Powertrain Diagnostic And System Enhancements This bulletin involves flash reprogramming the Powertrain Control Module (PCM) with new software. NOTE: There will be two software packages to choose from. Both software updates will fix all symptoms/conditions listed. One will contain a enhanced accelerator pedal operation and one will not. Refer to the ?Symptoms/Conditions? for a detailed description of the changes. Be sure to consult with the Customer on what software version they prefer, Enhanced Pedal or Standard Pedal. Once the software choice is programmed it is a permanent change. NOTE: There is another software choice available, in addition to addressing all the symptom/conditions listed. This new version of software called Enhanced Pedal has an update to the accelerator pedal operation. This change when applied will make the vehicle more responsive with less pedal input and also take less effort to maintain a constant cruising speed. Be sure to consult with the Customer on what software version they prefer, Enhanced Pedal or Standard Pedal. Once the software choice is programmed it is a permanent change. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC): ? U0140 - Lost Communication With Body Control Module (BCM) ? P0108 - Manifold Absolute Pressure Sensor Circuit High ? P0441 - Evap Purge System Performance ? P06DE - Engine Oil Pressure Control Circuit Stuck On ? P06DA - Engine Oil Pressure Control Circuit ? P0420 - Catalyst Efficiency (Bank 1) sets in temperatures of 85° F (29° C) or higher ? P0430 - Catalyst Efficiency (Bank 2) sets in temperatures of 85° F (29° C) or higher ? P0133 - O2 Sensor 1/1 Slow Response ? P0153 - O2 Sensor 2/1 Slow Response ? P0300 - Multiple Cylinder Misfire ? P0301 - Cylinder 1 Misfire ? P0302 - Cylinder 2 Misfire ? P0303 - Cylinder 3 Misfire